This episode marks the first time in the series that Anthony Head displays his singing talents. Giles will sing on screen again in three more episodes: in his apartment in The Yoko Factor (2000), during his dream sequence in Restless (2000), and in the musical episode Once More, with Feeling (2001). Prior to being cast in Buffy, Head had several roles in musical theater. His brother, Murray, is a professional singer, best known for "One Night in Bangkok" (1984).
Willow refers to having had a crush on Giles, and Tara and Anya seem to share it.
In the original script Willow added something after she talked about Martin Luther King: "But probably a lot less eloquent... And with the... Evil... So, different that Martin Luther King. Let's move on."
Forrest seems to have forgotten Maggie Walsh's advice from Hush (1999), about using the elevator in an emergency.